What happened:
During static analysis, I've encountered piece of code that I think may lead to undesired behavior of LeastFreeCapacity algorithm when using podset groups. When using LeastFreeCapacity In sortedDomainsWithLeader function we don't sort ascending by the stateWithLeader field which I believe we should:

https://github.com/kubernetes-sigs/kueue/blob/main/pkg/cache/scheduler/tas_flavor_snapshot.go#L1308-L1319

This need confirmation and then unit tests to ensure it wai.

What you expected to happen:

How to reproduce it (as minimally and precisely as possible):

Anything else we need to know?:

Environment:

• Kubernetes version (use kubectl version):
• Kueue version (use git describe --tags --dirty --always):
• Cloud provider or hardware configuration:
• OS (e.g: cat /etc/os-release):
• Kernel (e.g. uname -a):
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